Add missing security context to Glance pods/containers

This updates the Glance chart to include the pod
security context on the pod template.

This also adds the container security context to set
readOnlyRootFilesystem flag to true

Change-Id: I0a164ed48dd11780b4fdbb8be6b492fb45efe0aa

glance/templates/job-clean.yaml

@@ -60,6 +60,7 @@ spec:
 {{ tuple $envAll "glance" "clean" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
     spec:
       serviceAccountName: {{ $serviceAccountName }}
+{{ dict "envAll" $envAll "application" "clean" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
       restartPolicy: OnFailure
       nodeSelector:
         {{ .Values.labels.job.node_selector_key }}: {{ .Values.labels.job.node_selector_value }}
@@ -70,6 +71,7 @@ spec:
         - name: glance-secret-clean
 {{ tuple $envAll "glance_storage_init" | include "helm-toolkit.snippets.image" | indent 10 }}
 {{ tuple $envAll $envAll.Values.pod.resources.jobs.bootstrap | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
+{{ dict "envAll" $envAll "application" "clean" "container" "glance_secret_clean" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
           env:
             - name: NAMESPACE
               valueFrom:

glance/values.yaml

@@ -847,6 +847,13 @@ pod:
         glance_registry:
           readOnlyRootFilesystem: true
           allowPrivilegeEscalation: false
+    clean:
+      pod:
+        runAsUser: 42424
+      container:
+        glance_secret_clean:
+          readOnlyRootFilesystem: true
+          allowPrivilegeEscalation: false
     metadefs_load:
       pod:
         runAsUser: 42424